Powertrain
generic / SAE
P01C1
Fuel Rail Pressure Sensor Circuit High Bank 2
Fuel rail pressure sensor B2 signal voltage above expected range. Wiring faults of this kind typically come from chafing, water ingress at connector seals, or pin push-back — a wiggle test on the harness while the code is active often confirms the location.
SystemPowertrain
Typegeneric / SAE
GroupP0
Range / number1 / C1
Possible causes
- Signal wire open high
- Connector pins corroded - high contact resistance low
- Supply wire pinched against B+ source low
Inspection / repair
- Difficulty: medium
- DIY: possible
- Estimated cost: 80–600 €
- Estimated time: 0.5–2.5 h
- Component: fuel rail pressure sensor b2
- Component: sensor wiring
- MIL / check engine light
- emissions-relevant
- limp mode possible
Sources
References
sae:J2012